As internet services newly emerge with diversity and complexity, great challenges and demands are presented to both IP network and optical network to support various services. Aimed to solve this problem, this paper proposes a light-weighted echo-state-network (LW-ESN) based services awareness scheme of the software defined IP and optical converged network. This LW-ESN model adopts the ring topology structure inside and generates the probability output result to determine the quality of service policy of IP and optical converged network. Moreover, the LW-ESN based service awareness engine is also designed in controller node of IP and optical converged network to perform services awareness by obtaining service traffic parameters from IP and optical layers, together with necessary working procedure. Simulation results show that the proposed approach is able to improve the services-oriented supporting ability in terms of blocking rate and delay time.

To enhance the communication quality of OpenFlow controlled all-optical networks, an optical signal-to-noise ratio comprehensive-awareness (OSNR-CA) model based lightpath control scheme is proposed. This approach transforms main physical-layer optical impairments into OSNR value, and takes this comprehensive OSNR value of the optical signal along the lightpath into consideration, when establishing the lightpath for the connection request using Open- Flow protocol. Moreover, the proposed scheme makes full advantages of the OSNR monitoring function in each node, and assigns the lightpath according to the comprehensive-OSNR value by extending messages of OpenFlow protocol, in order to guarantee the reliable establishment of the lightpath. The simulation results show that the proposed scheme has better performance in terms of packet loss rate and lightpath establishment time.

随着宽带接入技术的发展，以太无源光网络是光纤到户的一种备选方案.而光网络单元数量众多，其成本成为限制以太无源光网络技术实施的重要影响因素.本文提出了一种低成本以太无源光网络单元实现方式: 采用带柔性电路板的单纤双向光纤组件直接安装在光网络单元的电路板上.为了验证弯曲柔性电路板的高速性能没有恶化，采用有限元方法仿真了弯曲柔性电路板的小信号响应.由于该方式没有独立的光收发模块，无法采用比特误码分析仪进行测试，因此提出了采用网络测试仪搭建光网络单元的光信号性能测试系统的方案并实现了对光信号的性能测试.结果表明: 对于发射机，在0℃~70℃的范围内得到了超过10 dB的消光比和1 dBm的平均发射功率; 对于接收机，估算灵敏度为-27 dBm.

组播业务的迅速增长对现有光网络的光路分配提出了更高的挑战.针对在大规模的光网络中，由于光组播路径中光信噪比过低导致传输层光链路无法正常工作，并由此带来“假性信令成功”的问题，提出了一种光信噪比受限的光组播路径分配机制.该机制充分利用光网络节点中光信噪比监测功能，在信令消息中携带光信噪比性能参量，并在光组播路径分配的信令过程中将光信噪比作为光波长分配的重要依据.通过该机制，控制平面在信令过程中充分考虑光信噪比因素，确保传输层的光组播路径得以顺利建立并正常工作.仿真结果表明，所提出的基于光信噪比感知的组播光路分配机制能够解决“假性信令成功”的问题，并有效降低光组播路径的阻塞率.

随着智能电网的发展及其多种信息业务的涌现, 10G-EPON作为业务接入技术日益成为重要支撑; 然而业务的多元化对10G-EPON的多业务支撑能力提出了重要挑战.为了适应电力系统中多种不同类型业务的需求, 本文对智能电网的信息业务特性进行分析, 提出了一种基于贝叶斯分类的10G-EPON业务感知机制; 并且根据10G-EPON中OLT与ONU的主从式网络架构特点, 提出了业务感知的主从式实现方式.该机制使用贝叶斯网络分析数据包的特征, 进而确认待传送业务的类型.在贝叶斯业务分类的基础上, 通过OLT和ONU之间的交互决定业务的资源分配和传输策略.为了验证新机制的有效性, 分别从时延和丢包率两方面进行系统仿真.仿真结果表明, 所提出的基于贝叶斯分类的业务感知机制在时延和丢包率具有显著的优势, 能够实现业务与10G-EPON的高效匹配, 提高10G-EPON在智能电网应用中多业务的区分支持能力.